Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already carry the safety profile (readOnlyHint, idempotentHint, openWorldHint, destructiveHint=false), and the description adds complementary behavioral context: a deterministic-output guarantee, the 'concrete blockers' failure mode, and paid-resource cost disclosure at the direct URL. Nothing contradicts the annotations; the deterministic-ordering promise reinforces idempotentHint, and the cost disclosure is genuinely additive.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Three compact sentences that front-load the core function first, then scope, then exclusions and pricing — no filler, every sentence earns its place. The cryptic 'trust identity permission / latency excess' phrasing and the long exclusion list keep it from a 5, but the structure is otherwise efficient.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a graph-validating tool with no output schema and 0% parameter coverage, the description gives the essential contract but leaves the result shape vague — an agent cannot tell what a 'concrete blocker' contains or how enabled/cost/latency_ms influence the returned order. Cost and safety are well covered, but the operational detail needed to confidently invoke and interpret this moderately complex tool is thin.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema description coverage, the description must compensate, and it partially does by mapping the two parameter groups: 'workflow dependencies' to nodes/edges and 'execution constraints' to max_total_cost/max_total_latency_ms. It stops at the group level, though — it never explains per-node cost/enabled/latency_ms semantics, the meaning of edge direction, or how the two max constraints interact, leaving individual parameters underspecified.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: it validates caller-supplied workflow dependencies and execution constraints, returning a deterministic execution order or concrete blockers. The phrase 'Intended for trust identity permission / latency excess' hints at its niche, but it does not differentiate this instance from the seven near-identically named trust_identity_permission_control_plane_* siblings, nor from workflow_dependency_validator, whose name heavily overlaps the described function.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides explicit when-to-use ('Intended for trust identity permission / latency excess') and when-not-to-use ('Do not use for legal, identity, sanctions, fraud, contractual, or regulatory adjudication') guidance, plus a cost signal ($0.002/call) that informs whether invocation is worth it. However, it never names alternative tools for the excluded domains or for choosing among the many sibling control planes, so routing remains partially ambiguous; the coexistence of 'trust identity permission' as intended use and 'identity adjudication' as excluded also needs unpacking.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.